The bird in the top picture is
the left hand bird in the lower picture and has been claimed as being a "Tundra
Ringed Plover" Charadrius hiaticulatundrae. According to Shorebirds (Hayman,
Marchant and Prater - 1986) this sub species breeds in Scandinavia and the USSR and as
such can be expected to migrate seen in the UK during migration. Certainly the
darker mantle and smaller size fit with this conclusion. However, there are
apparently variations in the nominate species in both size and the relative darkness of
the mantle, making confirmation of the exact identification difficult. Perhaps one
for the Records Committee to muse over!